CN205187365U - Stone coal malleation air conveying system - Google Patents

Abstract

The utility model discloses a positive pressure pneumatic conveying system for pebble coal, which comprises a single-point conveying pump system, an air source system, a pipeline system and a control system. SCQ pump, discharge valve, first rotary launcher, air intake system and local control system, manual flapper door is connected with feed device and expansion joint, expansion joint is connected with feed valve, feed valve is connected with SCQ pump , the local control system is set inside the SCQ pump, and the bottom of the SCQ pump is connected to the discharge valve, the discharge valve is connected to the first rotary launcher, the first rotary launcher is connected to the delivery pipeline, and the SCQ pump and the first rotary launcher are both Connect with air intake system. In the utility model, the conveying system realizes the functions of automatic feeding, automatic conveying, automatic stop and valve damage alarm. The positive pressure pneumatic conveying system for pebble coal is environmentally friendly, efficient and stable, and there is no dust and no leakage at the use site. The system conveys no material jams and no material blockage.

Description

A positive pressure pneumatic conveying system for pebble coal

technical field

The utility model relates to the field of product pebble coal pressure pneumatic conveying, in particular to a pebble coal positive pressure pneumatic conveying system.

Background technique

As we all know, the pebble coal produced by coal mills in domestic thermal power plants is usually transported abroad by manual forklifts. Therefore, the on-site working environment is harsh and the pollution is serious. Pneumatic conveying system generally conveys powdery or small granular materials, while pebble coal particles can reach up to 80mm, and small particles are also 10-50mm. Because the particles are too large to be transported by positive pressure pneumatic conveying, there is no pebble coal in the domestic market. Positive pressure pneumatic conveying system. To this end, we propose a new, energy-saving, environmentally friendly, and low-maintenance positive pressure gravel coal pneumatic conveying system to solve the above problems.

Utility model content

The purpose of the utility model is to solve the shortcomings in the prior art, and propose a positive pressure pneumatic conveying system for pebble coal.

In order to achieve the above object, the utility model adopts the following technical solutions:

A positive pressure pneumatic conveying system for pebble coal, including a single-point conveying pump system, a common gas source system, a pipeline system and a control system, the single-point conveying pump system includes a manual sliding door, an expansion joint, a feed valve, an SCQ Pump, discharge valve, first rotary launcher, air intake system and local control system, the manual flapper door is connected with a feeding device and an expansion joint, the expansion joint is connected with a feed valve, and the feed valve Connect the SCQ pump, the local control system is arranged inside the SCQ pump, and the bottom of the SCQ pump is connected to the discharge valve, the discharge valve is connected to the first rotary launcher, and the first rotary launcher is connected to the delivery pipeline, Both the SCQ pump and the first rotary launcher are connected to the air intake system, the feeding device is connected to the delivery pipeline, and a blocking valve is arranged between the feeding device and the delivery pipeline, and a plurality of the single-point delivery pump systems A terminal storehouse is connected through a delivery pipeline, and a second rotary launcher is arranged on the delivery pipeline between each of the single-point delivery pump systems.

Preferably, the pipeline system includes a delivery pipeline and a replaceable piggyback wear-resistant elbow, and the delivery pipeline is made of seamless steel pipe.

Preferably, the control system includes an on-site electromagnetic valve box, a PLC control system, an upper monitoring system, cables and bridges.

Preferably, the SCQ pump is spherical.

Preferably, the air source system includes an air compressor system, an air source pipeline, a valve system, and an air storage tank.

In the utility model, the conveying system realizes automatic feeding, automatic conveying, automatic stop and valve damage alarm functions. In addition, the positive pressure pneumatic conveying system for pebble coal is environmentally friendly, efficient and stable, and there is no dust and no leakage at the use site. The system conveys no material jams and no material blockage.

Description of drawings

Fig. 1 is the packaged schematic diagram of a kind of pebble coal positive pressure pneumatic conveying system proposed by the utility model;

Fig. 2 is a schematic diagram of the internal structure of a positive pressure pneumatic conveying system for pebble coal proposed by the utility model.

In the figure: 1 Manual sliding door, 2 Expansion joint, 3 Inlet valve, 4SCQ pump, 5 Outlet valve, 6 First rotary launcher, 7 Air intake system, 8 Local control system, 9 Single point delivery pump system , 10 air source system, 11 pipeline system, 12 second rotary launcher, 13 delivery pipeline, 14 blockage removal valve, 15 terminal warehouse.

detailed description

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. example. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

Referring to Figure 1-2, a positive pressure pneumatic conveying system for pebble coal includes a single-point conveying pump system 9, a gas source system 10, a pipeline system 11 and a control system. The single-point conveying pump system 9 is used to carry and launch pebble coal, And the single-point delivery pump system 9 includes a manual sliding door 1, an expansion joint 2, a feed valve 3, an SCQ pump 4, a discharge valve 5, a first rotary launcher 6, an air intake system 7 and an on-site control system 8, Manual sliding door 1 is connected with feeding device and expansion joint 2, expansion joint 2 is connected with feed valve 3, feed valve 3 is connected with SCQ pump 4, SCQ pump 4 is spherical, unique spherical design, small footprint, effective Large volume, simple and flexible layout, can be used in a single point, can also be arranged in parallel with multiple points, suitable for different gravel coal transportation sites, and SCQ pump 4 has a large transportation capacity and the maximum output can reach 10t/h. The local control system 8 is arranged inside the SCQ pump 4, and the bottom of the SCQ pump 4 is connected to the discharge valve 5, and the discharge valve 5 is connected to the first rotary launcher 6, and the first rotary launcher 6 utilizes compressed air to realize the flow of materials. The rotation in the pipeline is accelerated to increase the discharge speed of the pebble coal, prevent the deposition of large particles of pebble coal in the pipeline, and at the same time limitably prevent the outgassing caused by the large particles of the pebble coal, reduce the gas consumption of the conveying and save the energy consumption of the operation. The rotary launcher has a unique tangential air intake design, which can effectively increase the discharge speed. The first rotary launcher 6 is connected to the delivery pipeline 13. Both the SCQ pump 4 and the first rotary launcher 6 are connected to the intake system 7. The feed The device is connected to the delivery pipeline 13, and a blockage valve 14 is provided between the feeding device and the delivery pipeline 13, and a plurality of single-point delivery pump systems 9 are connected to a terminal warehouse 15 through the delivery pipeline 13, and each single-point delivery pump system 9 The conveying pipes 13 between are equipped with second rotary launchers 12, and the single-point conveying pump system 9 has a small layout space, which is suitable for the use site of coal pulverizer gravel coal conveying, and the layout height does not exceed 1.2m.

The gas source system 10 provides power gas source and instrument gas source for the pebble coal transportation system, and the public gas source system 10 includes an air compressor system, gas source pipelines, valve systems and gas storage tanks.

The pipeline system 11 includes a delivery pipeline and a replaceable piggyback wear-resistant elbow, and the delivery pipeline is made of seamless steel pipe. The layout of the pipeline system 11 is simple and convenient, and it is easy to repair and maintain. The diameter of the delivery pipeline is small, and the diameter of the delivery pipeline generally does not exceed 150mm. Due to the small diameter of the conveying pipeline, it is convenient for on-site maintenance. The replaceable piggyback wear-resistant elbow has a unique design of piggyback wear-resistant material, which can absorb the wear caused by the high speed during the transportation of pebble coal. At the same time, the piggyback wear-resistant section can be disassembled independently for use The replacement is convenient, greatly reducing the time and personnel for replacement and maintenance.

The control system includes on-site electromagnetic valve box, PLC control system, upper monitoring system, cable and bridge, and the control system adopts PLC control, which makes the whole positive pressure pebble coal conveying system realize automation, automatic feeding, automatic detection of full material, automatic conveying , stop automatically, do not need manual operation on site, fully realize automation, the upper monitoring system can monitor the operation of the equipment in the entire positive pressure stone coal pneumatic conveying system, can set the conveying time and conveying cycle on the upper, and realize the valve at the same time Damage alarm and other functions.

In the utility model, the manual sliding door 1 in the single-point conveying pump system 9 is in an open state, the feed valve 3 is opened, and the pebble coal falls into the SCQ pump 4 under the action of gravity. , the feed valve 3 is closed with a delay of 1S, the discharge valve 5 is opened, the air intake system 7 starts to intake air, and the pebble coal is fluidized and inflated, and the first rotary launcher 6 rotates and accelerates the pebble coal through compressed air, and the pebble coal Coal is transported into pipeline system 11 . The second rotary launcher 12 arranged in the delivery pipeline 13 simultaneously accelerates the rotation of the pebble coal entering the delivery pipeline 13, so that it can be smoothly delivered to the target bin. The control system detects the delivery pressure in the delivery pump and the pipeline. When the delivery pressure rises and drops to the set value smoothly, the air intake system 7 stops the air supply, and the delivery cycle ends, and the above process repeats itself. When the pipeline pressure detected by the control system is greater than the set plugging pressure and is in a high-pressure state for a long time, the system blockage valve 14 will be opened for automatic blockage removal, until the pipeline pressure drops to the set value, the system will open again to supply air and automatically transport . The stone coal positive pressure pneumatic conveying system has the function of automatic blockage removal without manual intervention.

The above is only a preferred embodiment of the present utility model, but the scope of protection of the present utility model is not limited thereto. Anyone familiar with the technical field is within the technical scope disclosed by the utility model. Any equivalent replacement or change of the technical solution and the concept of the utility model shall fall within the scope of protection of the utility model.

Claims (5)

1. a positive pressure pneumatic conveying system for pebble coal, comprising a single-point delivery pump system (9), an air source system (10), a pipeline system (11) and a control system, is characterized in that: the single-point delivery pump system ( 9) Including manual sliding door (1), expansion joint (2), feed valve (3), SCQ pump (4), discharge valve (5), first rotary launcher (6), air intake system ( 7) and the local control system (8), the manual sliding door (1) is connected with a feeding device and an expansion joint (2), and the expansion joint (2) is connected with a feed valve (3), and the feed The feed valve (3) is connected to the SCQ pump (4), and the local control system (8) is arranged inside the SCQ pump (4), and the bottom of the SCQ pump (4) is connected to the discharge valve (5), and the discharge valve (5) is connected to the discharge valve (5). The material valve (5) is connected with the first rotary launcher (6), and the first rotary launcher (6) is connected with the delivery pipeline (13), and the SCQ pump (4) and the first rotary launcher (6) are all connected with The air intake system (7) is connected, the feeding device is connected to the delivery pipeline (13), and a blocking valve (14) is arranged between the feeding device and the delivery pipeline (13), and a plurality of the single-point delivery pump systems (9) The terminal storehouse (15) is connected with the delivery pipeline (13), and the delivery pipeline (13) between each of the single-point delivery pump systems (9) is provided with a second rotary launcher (12) . 2. A positive pressure pneumatic conveying system for pebble coal according to claim 1, characterized in that the pipeline system (11) includes a conveying pipeline and a replaceable piggyback wear-resistant elbow, and the conveying pipeline adopts seamless steel pipe . 3. A positive pressure pneumatic conveying system for pebble coal according to claim 1, characterized in that the control system includes an on-site electromagnetic valve box, a PLC control system, an upper monitoring system, cables and bridges. 4. A positive pressure pneumatic conveying system for pebble coal according to claim 1, characterized in that the SCQ pump (4) is spherical. 5 . A positive pressure pneumatic conveying system for pebble coal according to claim 1 , characterized in that the gas source system ( 10 ) includes an air compressor system, gas source pipelines, valve systems and a gas storage tank. 6 .